Truck.



PATENTED APR. 2, 1907.

,3. c. BRUBN.

TRUCK.

APPLICATION FILED JAN. 26. 1906.

WITNESSES INVENTOH NITED srAgns ATENT orrron.

EDWIN o. BRUEN, or BROOKLYN, NEW YORK.

,ITRUGK.

Application filed January 25,

, To all whom, it may concern:

Be it known that I, EDWINC. BRUEN, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have inventedcertain new and .useful Improvements in Trucks or Carriers,

' disc and materials from hand-trucks-or other means commonly employed for carrying the load from one place to another involves re 'peated handling, loss of time, and frequently damage, and I seek by my invention to'ob viate this.

In the accompanying drawings, illustrating my invention, in both figures of which. like a parts are designated by similar letters of reference, Figure 1- is an end view, partly in section, of a truck or carrier embodying my improvement; and Fig. 2 is a top plan view thereof. 1 The flat platform A of my improved truck or carrieris mounted upon and rigidlysecured to the upper ends of a series of screws or jacks B, preferably four in number. As .shown, the truck or carrier is providedvwith four wheels C and two axles D. 'Upon each axle D two sprocket-wheels E arehorizontally mounted, and each of said wheels is loosely journaled in a tubular bearing K, extending through said axle' and provided at its lower end with a retaining-ring K, These sprocket-wheels E are centrally cored and threaded tocorrespond to the threads of the screws or jacks B. An endless sprocketchain F passes around and engages the outer periphery of each sprocket-wheel E and terminates at one end of the truck or carrier in a loop G,avhich is formed by carrying each section of the chain inwardly and around an idler J, horizontally mounted on one of the axles D, and then outwardly.

In assembling the parts of my device the screws or jacks supporting the platform A are enga ed with the centrally-cored and throadedImbs of the sprocket-wheels extend- Specification of Letters Patent.

ing into the tubular bearing K, and then by manipulation of the chain the platform A J Patented April 2, 1907. 1906. Serial No. 297,756.

is raised or lowered. For instance, if the chain is pulled or moved to the right the sprocket-wheels will operate to move the screws or jacks upwardly and the platform will be correspondingly raised, and when the chain is pulled or moved to the left the screws or'jaoks will descend and the platform be lowered. l

. The intent of my invention is to employ'it in connection with a portable receiving-platform H, upon which the merchandise or materials are placed. This portable platform H is provided with legs or longitudinal side pieces upon which it is mounted, whereby the adjustable truck can be run under said platform, as shown in Fig. 1 of the drawings. To convey the loadpaper, for instanceto the press-room of a printing establishment without necessitating several handlings, the truck or carrier of my invention is moved, by means of its handle I, under the portable platform H, and the platform A ofmy device is then raised, by means of the sprocketchain F, sprocket-wheels E, and screws or jacks B, until it lifts the portable platform H from the floor. My device is then employed as a truck or carrier and moved, by means of its handle, to convey the load of merchandisc or materials on the portable platform H I to the desired place of use or distribution.

It will be observed that the operation of the screws or jacks is substantially the same as a worm-gear, and one may be substituted for the other without departing from the principle of my invention. It will be seen from the foregoing description that a truck or carrier embodying the novel feature of my invention of a platform which can be adjusted to and set at varying heights, and hence take and carry a portable receiving platform and its load, will be of very great utility and advantage in moving merchandise and materials to the desired point of use or distribution, not only in mills, factories, and large commercial establish merits, but in the construction of buildings, public works, &c.

While I have described my device as being moved by manual power in transporting the load taken on, it 'is obvious that any other suitable power may be employed for this purpose.

The power employed for moving the truck or carrier and for operating the sprocketchain to rotate the sprocket-wheels will deform rigidly mounted directly upon the up per ends of a series of vertically-adjustable screws, with a series of sprocket-wheels hori- ,zontally mounted on the wheel-axles and centrally-eored and-threaded to respectively engage said screws. and means such as a s rocket-chain passing around and engaging the outer periphery of each sprocketwlieel, whereby said screws can be adjusted to raise or lower said. platform, substantially as described.

2. In a vertically-adjustable truck, a platform rigidly mounted at the respective four corners thereof upon the upper end of vertical screws, each of said screws extending through a tubular bearing and engaging a centrally-cored and threaded sprocket-wheel horizontally mounted on the wheel-axle, and means such as a sprocket chain passing around and, engaging the outer periphery of each sprockt-wheel, whereby said vertical screws can be adjusted to raise or lower said platform, substantially as described.

3. The combination with a truck provided with a platform rigidly mounted upon the upper ends of Vertically-adjustable screws, and means for adjusting said screws to raise or lower said platform, of the portable platform H, mounted upon supports substantially as described for the purposes set forth.

Signed at New York city, in the county of New York and State of New York, this 22d day of January, A. D. 1906.

EDW IN C. BRUEY.

Witnesses BENJ. BRUEN, Geo. N. Butt. 

